1286472544 has 48 divisors (see below), whose sum is σ = 2903475456. Its totient is φ = 549648000.

The previous prime is 1286472533. The next prime is 1286472557. The reversal of 1286472544 is 4452746821.

It is a self number, because there is not a number n which added to its sum of digits gives 1286472544.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65469 + ... + 82819.

It is an arithmetic number, because the mean of its divisors is an integer number (60489072).

Almost surely, 2^1286472544 is an apocalyptic number.

1286472544 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1286472544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1451737728).

1286472544 is an abundant number, since it is smaller than the sum of its proper divisors (1617002912).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1286472544 is a wasteful number, since it uses less digits than its factorization.

1286472544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17699 (or 17691 counting only the distinct ones).

The product of its digits is 430080, while the sum is 43.

The square root of 1286472544 is about 35867.4301281818. The cubic root of 1286472544 is about 1087.5940941881.

The spelling of 1286472544 in words is "one billion, two hundred eighty-six million, four hundred seventy-two thousand, five hundred forty-four".